In the often-thrilling, often-frustrating revival of the 1978 dancical, which reincarnates the spirit and choreography of Bob Fosse, the two possibilities are much the same. Substantially revamped and restaged by Wayne Cilento, a standout in the original production, this “Dancin’” argues that Fosse’s genius was constrained by the pedestrian storytelling of musical theater, with its “villains,” “baritone heroes” and “Christmas trees.” True Fosseism, it seems, can fully thrive only in the abstract, Olympian realms of George Balanchine and Jerome Robbins.